One new addition to the 2026 MLB season has been the addition of the ABS challenge system. It was something that was used in the minors before making its way to the majors this season. As is the case with something new, no matter what it is, there are going to be learning curves as everyone tries to figure it out and when to use it. It isn't taking away the human element from MLB umpires, but it helps to make sure that the calls are correct during the course of a game. We are a month into the season and watching any game, you can see how much of an impact the system has already made. When it comes to who is good and who isn't as good with using the system, it might surprise you as to who led the majors in successful challenges going into action on Tuesday night. Rockies Lead MLB in Successful ABS Challenges Warren Schaeffer | Isaiah J. Downing-Imagn Images There is no doubt that things already have a different feel around the Colorado Rockies in the first month of the season.…